An asphalt mixture mixing equipment

Abstract

This utility model belongs to the technical field of mixing equipment, and particularly relates to an asphalt mixture mixing device, including a mixing mechanism with a discharge gate assembly at the bottom. The mixing mechanism includes a mixing tank and two mixing shaft assemblies horizontally arranged inside the mixing tank. Two semi-circular mixing chambers are horizontally arranged inside the mixing tank, and the mixing shaft assemblies are respectively located in the corresponding mixing chambers. A discharge port is provided on the bottom side between the two mixing chambers. The discharge gate assembly includes a conical door panel with a door panel liner. When the discharge gate assembly is fitted into the discharge port, the door panel liner tilts upward and bulges, separating the bottom sides of the two mixing chambers. The conical door panel structure guides the material to the mixing chambers on both sides for mixing, reducing the stress on the discharge gate assembly. Simultaneously, during discharge, the conical door panel structure completely detaches from the discharge port, ensuring sufficient discharge of material from the mixing tank and preventing material accumulation in the mixing tank.

Description

Technical Field

[0001] This utility model belongs to the technical field of mixing equipment, and in particular relates to an asphalt mixture mixing equipment. Background Technology

[0002] Currently, the mixing units used in asphalt mixing plants typically adopt a horizontal twin-shaft layout. The mixing process of asphalt mixture is a violent and high-load physical process. Through two parallel mixing shafts and a precise blade arrangement, the mixture rotates in opposite directions.

[0003] The discharge gate is the "throat" of the mixing unit, and its performance directly affects the production cycle, the sealing performance of the mixing tank, and maintenance costs. Typically, a dual-cylinder drive system is used to control the movement of one or two discharge gates hinged at the bottom outlet of the mixing tank to achieve material discharge.

[0004] Because the discharge port is located directly below the mixing tank, the material will directly act on the discharge gate during both feeding and mixing operations, causing the discharge gate to be subjected to greater stress. Over time, this will lead to wear and loosening of the discharge gate, affecting its sealing performance. Utility Model Content

[0005] In view of the technical problems existing in the background art, the present invention provides an asphalt mixture mixing device.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: An asphalt mixture mixing device includes a mixing mechanism with a discharge gate assembly at the bottom. The mixing mechanism includes a mixing tank and two mixing shaft assemblies horizontally arranged inside the mixing tank. The mixing tank has two semi-circular mixing chambers arranged horizontally inside, and the mixing shaft assembly is located in the corresponding mixing chamber. A discharge port is provided on the bottom side between the two mixing chambers. The unloading gate assembly includes a cone-shaped gate panel with a gate panel liner. When the unloading gate assembly is fitted into the unloading port, the gate panel liner tilts upward and bulges to separate the bottom sides of the two mixing chambers.

[0007] Optionally, the inner wall of the mixing tank is provided with a mixing tank lining, and the mixing tank lining located at the discharge port has an inclined cut surface; the two ends of the door panel lining are respectively provided with mating inclined surfaces, and the mating inclined surfaces mate with the cut surfaces.

[0008] Optionally, the unloading gate assembly further includes a gate panel pivot, a drive shaft, and a connecting plate. The gate panel pivot and the drive shaft are fixed together by several connecting plates, and the gate panel is located on the upper side of the connecting plate. The gate panel pivot is rotatably located on the bottom side of the mixing tank, and unloading cylinders are respectively provided on both sides of the mixing tank. The piston rod of the unloading cylinder is connected to the drive shaft.

[0009] Optionally, the door panel pivot is located on the outside of the door panel, and an arc-shaped flow guide plate is provided on one side of one of the connecting plates. The flow guide plate wraps around the door panel pivot, and one end of the flow guide plate is connected to the door panel.

[0010] Optionally, a locking shaft is provided on the outside of the connecting plate at the end, and a locking assembly is provided on the outside of the mixing tank. When the discharge gate assembly closes the discharge port, the locking assembly is connected and fixed to the locking shaft.

[0011] Optionally, the locking assembly includes a locking plate, the middle of which is rotatably mounted on the mixing tank via a first pin, and an arc-shaped slot is provided on one side of the locking plate. A locking pin is detachably provided on the mixing tank, and the locking pin is in close contact with the locking plate so that the slot engages with the locking shaft for locking.

[0012] Optionally, several of the connecting plates are connected by a connecting shaft, which is located on the side near the locking shaft. The connecting shaft, the drive shaft, and the door panel rotating shaft are arranged sequentially at intervals.

[0013] Optionally, the door panel lining is connected to the door panel by connecting pins.

[0014] Optionally, a first bearing seat is provided on the bottom side of the mixing tank, the two ends of the door panel pivot are respectively located inside the first bearing seat, and the discharge port is opened diagonally above the first bearing seat.

[0015] Optionally, the stirring shaft assembly includes a stirring motor, a stirring shaft, and blades, wherein the output shaft of the stirring motor is connected to the stirring shaft for transmission, and a plurality of blades are evenly distributed on the stirring shaft.

[0016] This utility model has the following advantages and beneficial effects: In this invention, for a horizontal twin-shaft mixing mechanism, when the discharge port is located on the bottom side of the mixing tank, the discharge gate assembly is structurally designed with a conical door panel and an inner lining. When the discharge gate assembly is fitted into the discharge port, the inner lining protrudes upwards, separating the bottom sides of the two mixing chambers. This design evenly distributes the material inside the mixing tank to both sides, achieving uniform mixing force. The conical door panel structure guides the material to the mixing chambers on both sides, reducing the stress on the discharge gate assembly. Simultaneously, during discharge, the conical door panel completely detaches from the discharge port, ensuring sufficient discharge of material from the mixing tank and preventing material accumulation.

[0017] Secondly, by designing a diversion plate, due to the conical gate structure, the material will freely flow down to the inner lining of the conical gate on both sides at the moment of unloading. Therefore, after designing the diversion plate, the material can be diverted at the moment the unloading port is opened, preventing the material from flowing to the back of the unloading gate assembly and reducing the accumulation of material. After the gate is fully opened, the material flowing to the diversion plate can flow down naturally through the inner lining of the gate and be discharged, which not only avoids wasting material but also avoids contaminating the unloading gate assembly and ensures the normal operation of the unloading gate assembly. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the asphalt mixture mixing equipment of this utility model; Figure 2 This is a front view of the asphalt mixture mixing equipment of this utility model; Figure 3 for Figure 2 The right view; Figure 4 for Figure 2 A cross-sectional view along the AA direction; Figure 5 for Figure 3 A schematic diagram showing the unloading cylinder extending to open the unloading port; Figure 6 for Figure 4 A cross-sectional view of the unloading cylinder extending to open the unloading port; Figure 7 for Figure 4 A magnified view of a portion of point a; Figure 8 for Figure 6 A magnified view of a section at point b in the middle; Figure 9 This is one of the structural diagrams of the unloading gate assembly in this utility model; Figure 10 This is the second structural diagram of the unloading gate assembly in this utility model; Figure 11 This is a front view of the unloading gate assembly in this utility model; Figure 12 for Figure 11 The right view; Figure 13 for Figure 11 A cross-sectional view along the BB direction; Figure 14 This is a structural diagram of the locking assembly in this utility model; Figure 15 This is a schematic diagram of the flanged edge around the diversion plate in this utility model.

[0019] Reference numerals: 1-mixing box, 11-cylinder seat, 12-second bearing seat, 13-first bearing seat, 2-mixing box liner, 2a-mixing chamber, 2b-discharge port, 21-cut surface, 3-mixing motor, 31-motor seat, 32-mixing shaft, 33-blade, 4-discharge door assembly, 41-connecting plate, 42-drive shaft, 421-ear plate, 43-door panel pivot, 44-connecting shaft, 45-door panel, 46-door panel liner, 461-fitting inclined surface, 462-connecting pin, 47-locking shaft, 48-drain plate, 49-flanged edge, 5-discharge cylinder, 51-piston rod, 6-locking pin, 7-locking plate, 71-bayonet, 72-first pin, 73-limiting groove, 74-handle. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] Example like Figures 1-6 As shown, an asphalt mixture mixing device includes a mixing mechanism with a discharge gate assembly 4 at the bottom. The mixing mechanism includes a mixing tank 1 and two mixing shaft assemblies horizontally arranged inside the mixing tank 1.

[0023] like Figures 1-6As shown, the stirring shaft assembly includes a stirring motor 3, a stirring shaft 32, and blades 33. A motor base 31 is provided on one side of the stirring tank 1, and two stirring motors 3 are respectively fixed on the motor base 31. The output shafts of the stirring motors 3 are connected to the stirring shaft 32 for transmission. Second bearing seats 12 are provided on both sides of the stirring tank 1. The two ends of the stirring shaft 32 extend out of the stirring tank 1 and are installed on the second bearing seats 12. Several blades 33 are evenly distributed on the stirring shaft 32 for stirring materials. During operation, the two stirring motors 3 are started, and the two stirring shafts 32 rotate in opposite directions, thereby driving the blades 33 to rotate and achieve stirring.

[0024] like Figures 1-6 As shown, two semi-circular mixing chambers 2a are horizontally arranged inside the mixing tank 1, and the mixing shaft assembly is located in the corresponding mixing chamber 2a. A discharge port 2b is opened on the bottom side between the two mixing chambers 2a. The discharge port 2b is located directly below the center of the mixing tank 1, and its main purpose is to achieve the functions of full discharge and full mixing.

[0025] like Figures 1 to 13 As shown, the discharge gate assembly 4 includes a conical gate panel 45 with a gate panel liner 46, which is also conical. The taper of the gate panel liner 46 can be designed according to specific mixing requirements. The higher the height of the gate panel liner 46, the easier it is to achieve the effect of evenly distributing the material to both sides of the mixing chamber 1. When the discharge gate assembly 4 is installed in the discharge port 2b, it closes the discharge port 2b, and the gate panel liner 46 tilts upward and separates the bottom sides of the two mixing chambers 2a. During mixing, the material naturally circulates and mixes in the two mixing chambers 2a, which can prevent the material from accumulating in the middle of the mixing chamber 1 and reduce the stress impact on the discharge gate assembly 4 during mixing and when the material enters the mixing chamber 1.

[0026] In this invention, for a horizontal dual-shaft mixing mechanism, when the discharge port 2b is located on the bottom side of the mixing tank 1, and the discharge gate assembly 4 is fitted into the discharge port 2b, the inner lining 46 of the gate plate protrudes upwards at an angle, separating the bottom sides of the two mixing chambers 2a. This design allows the material inside the mixing tank 1 to be evenly distributed to both sides, achieving uniform mixing force. The conical gate plate 45 structure guides the material to the mixing chambers 2a on both sides for mixing, thereby reducing the force on the discharge gate assembly 4. At the same time, during discharge, the conical gate plate 45 structure completely detaches from the discharge port 2b, ensuring that the material inside the mixing tank 1 is fully discharged, preventing material accumulation in the mixing tank 1.

[0027] like Figures 1 to 13 As shown, the inner wall of the mixing tank 1 is provided with a mixing tank liner 2, and the mixing tank liner 2 located at the discharge port 2b has an inclined cut surface 21; the two ends of the door panel liner 46 are respectively provided with mating inclined surfaces 461, which mate with the cut surface 21 (e.g. Figure 7 (As shown). This design can further enhance the sealing performance and prevent material leakage when the unloading gate assembly 4 closes the unloading port 2b.

[0028] like Figures 1 to 13 As shown, the unloading gate assembly 4 also includes a gate panel pivot 43, a drive shaft 42, and a connecting plate 41. The gate panel pivot 43 and the drive shaft 42 are fixed together by several connecting plates 41, which enhance the overall structural strength. The gate panel 45 is located on the upper side of the connecting plate 41, and the gate panel 45 and the connecting plate 41 are connected by welding. The gate panel pivot 43 is rotatably located on the bottom side of the mixing tank 1. Unloading cylinders 5 are respectively provided on both sides of the mixing tank 1. Ear plates 421 are welded to both sides of the drive shaft 42. The piston rod 51 of the unloading cylinder 5 is hinged to the ear plate 421 of the drive shaft 42.

[0029] Specifically, cylinder seats 11 are provided on the upper ends of both sides of the mixing tank 1. The upper end of the unloading cylinder 5 is hinged to the cylinder seat 11. The cylinder seat 11 is located between two second bearing seats 12 to avoid the unloading cylinder 5.

[0030] Furthermore, a first bearing seat 13 is provided on the bottom side of the mixing tank 1, and the two ends of the door panel pivot 43 are respectively located inside the first bearing seat 13. The discharge port 2b is opened diagonally above the first bearing seat 13. The discharge port 2b and the first bearing seat 13 are staggered to ensure that when the discharge door assembly 4 is fully opened, the material falling through the discharge port 2b will not impact the discharge door assembly 4.

[0031] This structure allows the unloading gate assembly 4 to flip and open or close via the extension and retraction of the unloading cylinder 5 (e.g., ...). Figure 4 and Figure 6 (As shown).

[0032] like Figures 1 to 13 As shown, the door panel pivot 43 is located on the outside of the door panel 45. An arc-shaped guide plate 48 is provided on one side of several connecting plates 41, enclosing the door panel pivot 43. One end of the guide plate 48 is connected to the door panel 45. This design aims to enhance material guidance by providing a guide plate 48 on one side of the door panel pivot 43, preventing material leakage during unloading.

[0033] like Figure 15 As shown, to enhance the flow diversion effect, flanges 49 are provided around the diversion plate 48 to form an overflow channel, ensuring that the material can be diverted into the interior of the diversion plate 48 within the initial time after the discharge port 2b is opened, preventing material leakage. Simultaneously, when the discharge gate assembly 4 is fully opened, the diversion plate 48 rotates to an inclined state, thereby transferring the material on the diversion plate 48 to the inner lining 46 of the gate panel, ultimately completing the discharge operation of this portion of the material.

[0034] Reference Figure 4 and Figure 6 By designing the diversion plate 48, due to the conical door panel 45 structure, when the discharge door assembly 4 closes the discharge port 2b, its center bulges inward. Therefore, at the moment the discharge port 2b is opened for discharge, the material will freely flow down along the inner lining 46 of the conical door panels on both sides, resulting in material leakage on one side of the door panel pivot 43. Unless the discharge door assembly 4 opens for a sufficiently short time to control the discharge cylinder 5 to respond in a very short time, which would cause the discharge cylinder 5 to be overloaded, the above problem will occur when the discharge cylinder 5 slowly extends to open the discharge port 2b. Therefore, with the design of the diversion plate 48, the material can be diverted the moment the discharge port 2b is opened, preventing the material from flowing to the rear of the discharge gate assembly 4, reducing material accumulation and leakage. After the gate plate 45 is fully opened, the discharge gate assembly 4 is completely flipped to the bottom, and the material flowing to the diversion plate 48 can flow down naturally through the gate plate lining 46, which not only avoids wasting material but also avoids contaminating the discharge gate assembly 4, ensuring the normal operation of the discharge gate assembly 4.

[0035] like Figures 1 to 13 As shown, a locking shaft 47 is provided on the outer side of the connecting plate 41 at the end, and a locking assembly is provided on the outer side of the mixing tank 1. When the discharge gate assembly 4 closes the discharge port 2b, the locking assembly is connected and fixed to the locking shaft 47. The locking assembly is used to fix the locking shaft 47 when the discharge port 2b is closed, so as to prevent the discharge gate assembly 4 from automatically opening and causing material leakage when the discharge cylinder 5 malfunctions.

[0036] like Figures 1 to 13 As shown, the locking assembly further includes a locking plate 7, which is rotatably mounted on the mixing tank 1 via a first pin 72. One side of the locking plate 7 has an arc-shaped notch 71, and the other side has an arc-shaped limiting groove 73. A handle 74 is provided at one end of the locking plate 7. A locking pin 6 is detachably mounted on the mixing tank 1, and the locking pin 6 fits tightly against the limiting groove 73 of the locking plate 7, allowing the notch 71 to engage with the locking shaft 47 for locking.

[0037] like Figure 3 As shown, at this time, the unloading gate assembly 4 closes the unloading port 2b, the locking plate 7 flips to the bottom side of the locking pin 6, the bayonet 71 cooperates with the locking shaft 47 to lock, and the locking pin 6 is set in the limiting groove 73 to realize the limiting of the locking plate 7.

[0038] like Figure 5 As shown, at this time, the unloading gate assembly 4 opens the unloading port 2b, the locking plate 7 flips to the upper side of the locking pin 6, and the locking plate 7 is supported on the locking pin 6 by its own weight.

[0039] Furthermore, several connecting plates 41 are connected by connecting shafts 44, which are located on the side near the locking shaft 47. The connecting shafts 44, drive shafts 42, and door panel rotating shafts 43 are arranged in sequence at intervals. Through the connecting shafts 44, drive shafts 42, door panel rotating shafts 43, and connecting plates 41, a sufficiently strong frame structure is formed to support the door panel 45.

[0040] Furthermore, the door panel lining 46 is connected to the door panel 45 via connecting pins 462.

[0041] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An asphalt mixture mixing device, comprising a mixing mechanism with a discharge gate assembly at the bottom, the mixing mechanism including a mixing tank and two mixing shaft assemblies horizontally arranged inside the mixing tank, characterized in that: The mixing tank has two semi-circular mixing chambers arranged horizontally inside, and the mixing shaft assembly is located in the corresponding mixing chamber. A discharge port is provided on the bottom side between the two mixing chambers. The unloading gate assembly includes a cone-shaped gate panel with a gate panel liner. When the unloading gate assembly is fitted into the unloading port, the gate panel liner tilts upward and bulges to separate the bottom sides of the two mixing chambers.

2. The asphalt mixture mixing equipment according to claim 1, characterized in that: The inner wall of the mixing tank is provided with a mixing tank lining, and the mixing tank lining located at the discharge port has an inclined cut surface; the two ends of the door panel lining are respectively provided with mating inclined surfaces, and the mating inclined surfaces mate with the cut surfaces.

3. The asphalt mixture mixing equipment according to claim 1 or 2, characterized in that: The unloading gate assembly also includes a gate panel pivot, a drive shaft, and a connecting plate. The gate panel pivot and the drive shaft are fixed together by several connecting plates. The gate panel is located on the upper side of the connecting plate. The gate panel pivot is rotatably located on the bottom side of the mixing tank. Unloading cylinders are respectively provided on both sides of the mixing tank. The piston rod of the unloading cylinder is connected to the drive shaft.

4. The asphalt mixture mixing equipment according to claim 3, characterized in that: The door panel pivot is located on the outside of the door panel, and an arc-shaped flow guide plate is provided on one side of several connecting plates. The flow guide plate wraps around the door panel pivot, and one end of the flow guide plate is connected to the door panel.

5. The asphalt mixture mixing equipment according to claim 3, characterized in that: A locking shaft is provided on the outside of the connecting plate at the end, and a locking assembly is provided on the outside of the mixing tank. When the discharge gate assembly closes the discharge port, the locking assembly is connected and fixed to the locking shaft.

6. The asphalt mixture mixing equipment according to claim 5, characterized in that: The locking assembly includes a locking plate, which is rotatably mounted on the mixing tank via a first pin. An arc-shaped notch is provided on one side of the locking plate. A locking pin is detachably mounted on the mixing tank. The locking pin is in close contact with the locking plate so that the notch engages with the locking shaft for locking.

7. The asphalt mixture mixing equipment according to claim 5, characterized in that: Several of the connecting plates are connected by a connecting shaft, which is located on the side near the locking shaft. The connecting shaft, the drive shaft, and the door panel rotating shaft are arranged in sequence at intervals.

8. The asphalt mixture mixing equipment according to claim 5, characterized in that: The door panel lining is connected to the door panel by connecting pins.

9. The asphalt mixture mixing equipment according to claim 5, characterized in that: The bottom side of the mixing tank is provided with a first bearing seat, the two ends of the door panel shaft are respectively located inside the first bearing seat, and the discharge port is opened diagonally above the first bearing seat.

10. The asphalt mixture mixing equipment according to claim 1, characterized in that: The stirring shaft assembly includes a stirring motor, a stirring shaft, and blades. The output shaft of the stirring motor is connected to the stirring shaft for transmission, and several blades are evenly distributed on the stirring shaft.

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